You'll need Denver concrete specialists who engineer for freeze–thaw, UV, and hail. We require 4500–5000 psi, air‑entrained mixes (w/c ≤0.45), #4 rebar at 18 inches o.c., Class 6 bases compacted to 95% Proctor, and saw cuts within 6–12 hours. We oversee ROW permits, compliance with ACI/IBC/ADA standards, and time pours based on wind, temp